[Meglobob]

How about this pretender for MA Agartha?

A imprisioned fountain with S4 N9, which gives a blessing of regeneration+15%, berserk+2, +1 magic resistance, +2 morale.

Dominion 9 with scales of Order-3, Prod-2, Heat-3, Growth-2, Misfortune-3 and Magic-1.

Your ancient ones are pretty tough with reg+15% and berserk+2. The main thing about the berserk is it raises the attack of ancient ones to 11 and gives them a little extra protection. All your summoned sacreds should enjoy this bless too.

Initially make your cave captain your prophet so he can divine bless and expand with him. Soon after you can make another army up of ancient ones with a earth reader leading them. Place upto 20 ancient ones on hold attack, script earth reader with blessx3, flying shardsx2, cast spells. This is capable of conquering most indies. Aim to produce 9 Ancient ones a turn ASAP, any left over resources build your heaviest infantry.

Long term you should aim towards your unique national summons plus anything else that benefit from your 9 dominion golem cult. Lightless lanterns + skull mentors to speed your research up. Umbrals for raiding/assaulting other nations. Globals Earth Deep Blood Well, Forge of ancients and Gift of Health, Gift of Bounty (your pretender can cast). Gift of Health, gift of bounty, golem cult, a bless strategy on your ancient ones all go together so well with dominion 9. You even get awe on your fountain.

Your magic paths are fairly diverse with Earth, Nature, Astral, Water, Fire, Death all accessable from your mages or pretender. You can use mercenaries or summons to fill in the rest if you wish.

This would be fun to play in SP and may be competitive in MP if you are left alone long enough to get rolling. Your blessed ancients would be good enough early on to deter attack.